10. Fill an empty mayonnaise jar (with the label still on) with vanilla yogurt while no one’s looking. Then, when the family is in the room, grab the jar from the refrigerator and dig in to the “mayo.”

11. On Facebook, change your birthday to April 1. When the well wishes start rolling in, switch your status to “April Fools!”

12. Dip the ends of your officemate’s pens in clear nail polish.13. Take a screenshot of your coworker’s computer desktop, and set it as the background. Hide all of the desktop icons and watch as she struggles with the “frozen” screen.

14. Post a sign on the office copy machine that says, “This copier is now voice-activated.”